CHM 204 CBT PRACTICE : Undergragra

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Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace CHM 204 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions

Do not waste time on a question you don’t know

Move as fast as possible and starting with questions that don’t have calculation first to save time

Always crosscheck

Don’t be in a hurry to submit, you are not in a competition

Don’t be scared. Getting an A is easy

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

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Created on June 21, 2024 By

Aruwaji Philip

CHM 204

1 / 40

1. Bleaching powder provides chlorine which oxidizes ethanol to _________.

A. Ethyne

B. Ethanal

C. Ethane

D. Ethene

2 / 40

2. Sulphonation of benzene yields ___________

A. Sulphonic acid

B. Para sulphur benzene

C. Auto sulphur benzene

D. Sulphric acid

3 / 40

3. Which of the following statements is incorrect?

A. Alcohol can be prepared from the reduction of esters

B. Methanol is also called wood alcohol

C. Alcohol can be prepared by addition of water to double bonds

D. Aliphatic alcohols are less acidic than phenols

4 / 40

4. An example of Isolated Benzenoid Hydrocarbon is __________

A. Phenatrene

B. Biphenyl

C. Anthracene

D. Naphthalene

5 / 40

5. Denaturation involves the loss of what type of structure?

A. Tertiary

B. Secondary

C. Secondary and Tertiary

D. Primary

6 / 40

6. Which of the following is the formula for Hydroxylamine ?

A. H2.N.OH

B. CH2.OH

C. CH3.NH2.OH

D. C6.H5.NH-OH

7 / 40

7. Basic hydrolysis of any oil can produce ___

A. oil hydrolyte

B. oil hydrolyte

C. hydrated oil

D. Soap

8 / 40

A benzenoid hydrocarbon in which two benzene rings are fused together at the ortho position is called ____________

A. Biphenyl

B. Naphthalene

C. Phenanthrene

D. Anthracene

9 / 40

9. The general reaction of the carbonyl groups?

A. nucleophilic addition

B. electrophilic addition

C. electrophilic substitution

D. nucleophilic substitution

10 / 40

10. Polymerization of ethyne produces ?

A. Benzene

B. none of the above

C. Benzoic acid

D. polyethyne

11 / 40

11. Alcohol can be concentrated by ?____

A. distillation of the product

B. treatment of the product with dehydrating agent and filtration

C. distillation of product with benzene

D. by boiling the product

12 / 40

12. In order to produce a primary amide,an acid chloride should be treated with ___

A. An alcohol

B. A secondary amine

C. A primary amine

D. Ammonia

13 / 40

13. CH3CH2CH2.C(CH3)2.OH is ?

A. 2-methyl-1-butan-1-ol

B. 2,2-dimethyl-1-butanol

C. 2,2-dimethyl-1-pentanol

D. 2,2-dimethyl-2-butanol

14 / 40

14. Ar-OH stands for ------- functional group

A. Phenol

B. Aldehyde

C. Ketone

D. Ester

15 / 40

15. Reacting acid anhydride with benzene will produce _____

A. the reaction would not occur because of steric hinderance

B. aldehyde,ketone and alcohol

C. ketone and carboxylic acid

D. esters,alcohol and carboxylic acid

16 / 40

16. A functional group in a molecule exhibits characteristic ------

A. Physical properties

B. Chemical properties

C. Odour change

D. Colour change

17 / 40

17. Iodoform is easily recognized by?

A. it’s urine smell

B. It’s ether smell and blue colour

C. it’s medicinal smell and yellow colour

D. it’s ammonia smell and green colour

18 / 40

18. The E2 reactions of alkyl halides are favoured by the use of __________

A. Weak Acid

B. Strong Base

C. Strong Acid

D. Weak Base

19 / 40

19. Beside peptide bond,what other covalent bonds are commonly found in peptides ?

A. hndrophobic bond

B. disulfide bond

C. hydrogen bond

D. ether bond

20 / 40

20. Which pair of reactants below will react to produce an acetal ?

A. acid + acetone

B. primary aldehyde + ketone

C. ketone + alcohol

D. alcohol + aldehydes

21 / 40

21. RNH2 stands for class of compound called --------

A. Esters

B. Amides

C. Aromatics

D. Amines

22 / 40

22. The gas produced when sodium metal is dropped in ethanol _____

A. O2

B. H2

C. N2

D. CO2

23 / 40

23. The following terms can be used to describe cellulose except ____

A. Polysaccharide

B. Polymer

C. Biomass

D. Bioenzyme

24 / 40

24. For halogen derivatives of aromatic compounds, boiling point ---------- with increase in atomic size of the halogen atom.

A. Decreases

B. Increases

C. Have no effect

D. Averages

25 / 40

25. CH3.COOH has a greater miscibility with water than CH3.CH3-CH2-COOH. The reason is due to ?___

A. Mutual incompatibility

B. Lower molecular weight

C. Hydrogen bonding

D. Ionization

26 / 40

26. 180o bond angle is characteristic of ------ molecules
Oxidized

A. None

B. Sp3 hybridized

C. Sp hybridized

D. Sp2 hybridized

27 / 40

27.

Hydrogenation of benzene at higher temperature and under pressure yields ________

A. Cyclohexene

B. Benzaldehyde

C. Cyclohexane

D. Cyclohexyne

28 / 40

28.

The benzenoid hydrocarbons in which two or more benzene rings are fused together at ortho position in such a way that each pair of rings shares rings shares two carbons are called ---------- benzenoid hydrocarbon.

A. None of the options

B. Condensed

C. Isolated

D. All the options

29 / 40

29.

In electrophilic addition to alkenes, the electrophilic attack is on __________

A. C-H bond

B. C=C bond

C. None of the options

D. H-H bond

30 / 40

30. Ethane is sp3 hybridized molecules and has ---- bond angle

A. 120.5degrees

B. 45.5 degrees

C. 90.5 degrees

D. 190.5 degrees

31 / 40

31. An equilibrium mixture of ethanol and water boils at?

A. 68 and 98) degree C

B. 68 degree C

C. 90 degree C

D. 78 and 100) degree C

32 / 40

32.

Identify the most acidic compound from the following options

A. C2.H5.COOH

B. Cl.CH2.COOH

C. Cl2.CH.COOH

D. C3.H7.COOH

33 / 40

33. Which of the following is a primary Amine ?

A. N-ethyl, N Methylamine

B. 1,3 Pentane diamine

C. Triethylamine

D. N-methyl phenlyl amine

34 / 40

34. Organic chemistry is the study of ?___

A. all carbon compounds

B. some carbon compounds

C. hydro carbon

D. non hydro carbons

35 / 40

35. The enzyme responsible for fermentation of bread in yeast is ?

A. Ketose

B. Zymase

C. Yeastose

D. Zylose

36 / 40

36. The reaction of benzene with propanoyl chloride in the presence of Aluminum chloride will yeild _____

A. Phenyl methyl ketone

B. Acetophenone

C. Phenyl propyl ketone

D. Phenyl acetone

37 / 40

37. phenol is regarded as an acid because _____

A. it’s insoluble in water

B. it easily releases a proton due to resonance

C. it’s corrosive to the skin

D. it’s volatile

38 / 40

38. Saponification reaction is best described as _____

A. Soap making reaction

B. Base promoted hydrolysis reaction

C. Condensation reaction

D. Acid promoted hydrolysis reaction

39 / 40

39. Another name for methyl benzene is __________

A. Phenol

B. Toluene

C. Xylene

D. Naphthalene

40 / 40

40. A natural source of phenol is _____

A. high temperature distillation

B. vegetable oils

C. coal tar

D. fermentation of plants

Your score is

The average score is 43%

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